Fig. 5From: How to use CT texture analysis for prognostication of non-small cell lung cancerRight lower lobe NSCLC showing necrosis without cavitation (photopaenia on FDG-PET/CT) and adjacent pulmonary consolidation (a). Due to minimal contact with aerated lung, the tumour ROI has been constructed manually (b), using the fused PET/CT image and narrow windows for guidance. The area of necrosis without cavitation is included in the the ROI and the final filtered tumour image (c)Back to article page